Cap for building columns



Oct. 30, 1923.

J. LALLY GAP FOR BUILDING COLUMNS Filed March 24.

nun-LE IN VEN TOR flmmmy ATTOR EY :IIIIA 'IIL VIII! titll'l'fi are JOHN LALLY, OF BOSTON, IJASSACHUSETTS.

rates.

CAP FOR BUILDING COLUMNS.

Application filed Harch 24, 1923. Serial No. 627,412.

[0 all 10710122, it may concern: nated construction for the cap for by this Be it known that 1, JOHN LALLY, a citizen construction the retaining head is easily of the United States, residing at Boston, pressed into the thinner metal and the Suffolk County, Massachusetts, have inheavier metal being after united thereto 5 vented certain new and useful Improvegives the necessary strength for load carryments in Caps for Building Columns, of ing.

which the following is a specification. In use the laminated cap is laid on the 001- My invention relates to caps for building umn end and the retaining bead prevents slip-. columns and it is my object to produce ping. If desired the laminated cap may he 10 a sheet steel cap cheaply which will carry further secured to the, casing, concrete or all reasonable loads and not tend to both in any desired manner.

slide off the column end under load and In Fig. 3 I have shown a slight modifiin which I utilize the ductility of sheet steel cation in which the retaining ring 4 in the for the holding portion of the cap and steel thinner sheet 3' is located inside the casing 15 plate for the load carrying portion. 1, the heavier plate 5 being secured to the In the drawing Fig. 1 is atop view of my plate 3 by spot welding 66 as in the cap on a column, partly in section; Fig. 2 other form shown. a side view of the structure of Fig. 1. partly By selecting different grades of steel a in section; and Fig. 3 a sectional view of very ductile sheet may he used for the a slight modification of the cap. stamped sheet and a more rigid and resist-' The column is the usual steel tube 1 with ing sheet for load carrying purposes. the filling of concrete 2. I claim The cap consists of a relatively thin sheet 1. A cap for building columns comprising steel plate 3 having a retaining head a a relatively ductile plate of metal adapted pressed therein by dies which displace a porto rest on a column end with a portion theretion of the plate b .yond its surface, the head of displaced beyond the surface, said disheing approximately a fit for the casing end. placed portion being adapted to engage a As shown in Figs. 1 and 2 this head 4 is column end and a second. rigid plate sea fit for the outside of the casing l. cured thereto.

A second, relatively heavy piece of sheet 2. A cap for building columns comprising steel plate 5 for load carrying purposes is a plate of metal having a retaining bead laid on the sheet 3 carrying the head 4% and pressed therein. said head being adapted to the two are secured together, spotwelding engage the side Walls of a column end and 6-6 being preferably employed. a second plate of metal secured thereto for As the retaining head could not be pressed load carrying purposes.

"from a single thickness of sheet steel plate In testimony whereof I have hereunto which would be heavy enough for load subscribed my name. carrying purposes I have adopted the lami- I JOHN LALLY. 

